Draw the resonating structures of $NO_2$ and $N_2O_5$.

(N/A) $1$. For $NO_2$: The nitrogen atom has one unpaired electron. The two resonance structures involve the delocalization of the odd electron and the double bond between the nitrogen and the two oxygen atoms. The structures are: $O=N-O^{\bullet} \leftrightarrow ^{\bullet}O-N=O$.
$2$. For $N_2O_5$: The structure consists of two $NO_2$ groups linked by an oxygen atom $(O_2N-O-NO_2)$. Resonance occurs within the $NO_2$ groups,where the double bond alternates between the two oxygen atoms attached to each nitrogen atom. The resonance hybrid shows partial double bond character across the $N-O$ bonds.